Fits virtually all circuit breakers Grip Tight design effectively locks out circuit breakers. Adjust to breaker with simple thumb turn and close clamping handle for a tight grip on the toggle. Includes 1 breaker for 120 volt and another for 240 and higher. Compact device is easy to carry and easy to store. Accepts all American Lock and Master Lock safety padlock shackles and lockout hasp diameters. Features powder-coat steel and reinforced polymer for operation in harsh environments.